Amic acids as surface treatments

Abstract

Surfaces are modified with polymeric or monomeric amic acids that also comprise one or more tertiary amine functional groups. The amic acids may provide benefits including hydrophilicity, soil resistance, and corrosion inhibition to the treated surfaces. Compositions and methods for treating surfaces are provided.

The invention claimed is: 
     
       1. A method of modifying a surface to provide soil resistance that comprises contacting said surface with an aqueous solution of at least one amic acid said amic acid being the reaction products of a monomeric or polymeric compound containing at least one carboxylic anhydride with at least one amine that comprises at least 1 primary or secondary amine and at least one tertiary amine, said amic acids chosen from the group consisting of
 I. polymeric amic acids with the structures: 
 
       
         
           
           
               
               
           
         
         wherein R 1  and R 2  are H or a residue of the polymerization initiator, R 3  and R 4  are C 1-4  alkyl, hydroxyl C 1-4  alkyl, or taken together are morpholinium, and can be the same or different, R 5  is H or C 1-4  alkyl or hydroxyl alkyl, or (CH 2 ) p NR 3 R 4 , R 6  is H; phenyl; methyl, ethyl or halogen substituted phenyl; C 1-8  branched or straight chain alkyl; or OCH 3 ; R 7  is methyl, ethyl, or hydroxyl ethyl, M is H or an alkali metal cation, n+m is from about 20 to about 1000, and the ratio of n to m is from about 0.3 to 1 to about 1.1 to 1, and p is 2 or 3; 
         and 
         II. monomeric amic acids with the structures: 
       
       
         
           
           
               
               
           
         
         wherein R 8  is C 10  to C 20  alkyl or alkenyl and R 9  is H, or wherein R 8  and R 9  form the structure 
       
       
         
           
           
               
               
           
         
         wherein q+r is equal to about 12 and y is H, a substituted ammonium cation, or an alkali metal cation; 
         and 
       
       
         
           
           
               
               
           
         
         wherein R 8  is C 10  to C 20  alkyl or alkenyl and R 9  is H, or wherein R 8  and R 9  form the structure 
       
       
         
           
           
               
               
           
         
         wherein q+r is equal to about 12 and y is H, a substituted ammonium cation, or an alkali metal cation. 
       
     
     
       2. The method of  claim 1  wherein the surface is modified by contacting the surface with an aqueous solution of an amic acid which is the reaction product of a 1:1 copolymer of styrene and maleic anhydride, and dimethylaminopropylamine. 
     
     
       3. A method of modifying a surface to provide corrosion resistance to ferrous surfaces that comprises contacting said surface with an aqueous solution of at least one amic acid said amic acid being the reaction products of a monomeric or polymeric compound containing at least one carboxylic anhydride with at least one amine that comprises at least 1 primary or secondary amine and at least one tertiary amine, said amic acids chosen from the group consisting of
 I. polymeric amic acids with the structures: 
 
       
         
           
           
               
               
           
         
         wherein R 1  and R 2  are H or a residue of the polymerization initiator, R 3  and R 4  are C 1-4  alkyl, hydroxyl C 1-4  alkyl, or taken together are morpholinium, and can be the same or different, R 5  is H or C 1-4  alkyl or hydroxyl alkyl, or (CH 2 ) p NR 3 R 4 , R 6  is H; phenyl; methyl, ethyl or halogen substituted phenyl; C 1-8  branched or straight chain alkyl; or OCH 3 ; R 7  is methyl, ethyl, or hydroxyl ethyl, M is H or an alkali metal cation, n+m is from about 20 to about 1000, and the ratio of n to m is from about 0.3 to 1 to about 1.1 to 1, and p is 2 or 3; 
         and 
         II. monomeric amic acids with the structures: 
       
       
         
           
           
               
               
           
         
         wherein R 8  is C 10  to C 20  alkyl or alkenyl and R 9  is H, or wherein R 8  and R 9  form the structure 
       
       
         
           
           
               
               
           
         
         wherein q+r is equal to about 12 and y is H, a substituted ammonium cation, or an alkali metal cation; 
         and 
       
       
         
           
           
               
               
           
         
         wherein R 8  is C 10  to C 20  alkyl or alkenyl and R 9  is H, or wherein R 8  and R 9  form the structure 
       
       
         
           
           
               
               
           
         
         wherein q+r is equal to about 12 and y is H, a substituted ammonium cation, or an alkali metal cation. 
       
     
     
       4. The method of  claim 3  wherein the surface is modified by contacting the surface with an aqueous solution of an amic acid which is the reaction product of a maleated tall oil fatty acid and dimethylaminopropylamine.